Emma Sheriff, PhD
esheriff.bsky.social
Emma Sheriff, PhD
@esheriff.bsky.social
Phage enthusiast and microbiologist || Postdoctoral researcher in the Friman lab at the University of Helsinki || she/her/hers
Reposted by Emma Sheriff, PhD
Interested in doing a PhD in phage biology? See below a super cool project on megaphage ecology and evolution available at the University of Jyväskylä (FIN) in Elina Laanto's lab (Project no. 4). Co-supervision provided by yours truly.
🚀 PhD opportunity

The Dept of Biological and Environmental Science, University of Jyväskylä, is recruiting 1–4 new PhD candidates.

One of the positions is potentially in my lab, focusing on megaphages and their hosts.

Details and apply here 👇
bit.ly/48eqYNB

#phage
Doctoral Researcher positions, Biological and Environmental Sciences
The Department of Biological and Environmental Sciences is seeking applicants for 1–4 fully funded doctoral researcher positions. The positions will begin on August 1, 2026, or as agreed, for a maximu...
ats.talentadore.com
November 14, 2025 at 9:47 AM
Reposted by Emma Sheriff, PhD
Day 24, Magic. Finding something new in science feels like magic at times. #Drawtober #SciArt #PhageSky
October 24, 2025 at 8:31 PM
Reposted by Emma Sheriff, PhD
Help shape the future of microbiology in Europe. FEMS is conducting a survey to better understand the needs of microbiologists.

Your input will help identify key challenges & ensure the community’s voice is heard across Europe.

Complete it today and share with your network: 🔗 buff.ly/5eCowPX
October 22, 2025 at 9:00 AM
Awesome #phage #bioinformatics preprint from @shelbyeandersen.bsky.social, who is also very close to finishing her PhD and on the lookout for her next position 👀
Serine recombinases are conserved genetic markers of antiphage defense systems https://www.biorxiv.org/content/10.1101/2025.10.07.681051v1
October 21, 2025 at 1:23 PM
Reposted by Emma Sheriff, PhD
Fun fact: In reference 28 here, I used the word strain to mean something similar to the lineage level because a reviewer refused to let me use the word lineage.

There is still a lot of confusion in this space, and I strongly recommend defining whatever terminology you use.
I love this diagram
August 18, 2025 at 6:03 PM
Reposted by Emma Sheriff, PhD
Our latest efforts to understand Enterococcal wound infection. In long-term collaboration with @gthibault.bsky.social, we discovered how E. faecalis makes extracellular ROS - via EET!⚡️Which in turn dysregulates host UPR to delay wound healing. Led by @aarontan.bsky.social - his videos below are 🤩!
📢 Our new preprint is out! We show how the common gut bacterium 𝘌. 𝘧𝘢𝘦𝘤𝘢𝘭𝘪𝘴 stops wound healing. It uses a metabolic pathway, extracellular electron transport (EET), to stress host cells, halting their migration. Watch WT bacteria (orange) stop the cells while the mutant (blue) doesn't!
August 11, 2025 at 3:51 AM
Reposted by Emma Sheriff, PhD
Recently collaborator Tessa Pierce Ward helped mentor M.S. student Vienna Elmgreen to make a dashboard to visualize our meta-analysis of almost 10,000 Ralstonia isolations.

ralstoniadashboard.shinyapps.io/RalstoniaWil...
July 8, 2025 at 4:05 AM
Reposted by Emma Sheriff, PhD
'This work illustrates that shallow metagenomics provides the necessary sensitivity and taxonomic resolution to characterize species and strain-level diversity in extremely low biomass samples, opening possibilities for microbiome discovery in previously unexplored niches'
Microbiome diversity of low biomass skin sites is captured by metagenomics but not 16S amplicon sequencing https://www.biorxiv.org/content/10.1101/2025.06.24.661265v1
June 25, 2025 at 7:14 AM
Reposted by Emma Sheriff, PhD
F mechanisms are student and postdoc fellowships.

This is the US choking off funding for training the next generation of talent.

Where is the university leadership response?
F mechanisms (New and Competitive renewals)

Oof!

3/n
March 29, 2025 at 6:06 PM
Reposted by Emma Sheriff, PhD
Congratulations to our winners of the 2024 #FEMSMicrobes Article Award!
Just received the exciting news that the paper representing the bulk of my thesis work was selected as the best FEMS Microbes paper of 2024! Huge thanks to the editors-in-chief at FEMS Microbes (@femsjournals.bsky.social) for selecting me for this honor.
academic.oup.com/femsmicrobes...
Enterococcal quorum-controlled protease alters phage infection
A protease from Enterococcus faecalis alters phage infection.
academic.oup.com
February 25, 2025 at 3:03 PM
Just received the exciting news that the paper representing the bulk of my thesis work was selected as the best FEMS Microbes paper of 2024! Huge thanks to the editors-in-chief at FEMS Microbes (@femsjournals.bsky.social) for selecting me for this honor.
academic.oup.com/femsmicrobes...
Enterococcal quorum-controlled protease alters phage infection
A protease from Enterococcus faecalis alters phage infection.
academic.oup.com
February 24, 2025 at 1:26 PM
Reposted by Emma Sheriff, PhD
The President & the richest man in the world are recklessly attacking medical research—with researchers being laid off, studies being canceled, & kids now unable to get the lifesaving treatment they need. It’s absolutely heartless & will have devastating consequences for us all.
February 16, 2025 at 9:46 PM
Reposted by Emma Sheriff, PhD
👋 Hi antiphage defense community, we are soon releasing an update of DefenseFinder.

We are doing our best to include all the great discoveries from the community, but with so much going on we might miss things.

Please answer wt preprints/papers with new systems or mail/git them to us. 🙏
January 13, 2025 at 1:54 PM
Based on GitHub comments, I'm not the only one having these issues, and there's a broken link preventing me from downloading all the files I need to get it up and running locally.

Does anyone have other suggestions of tools to predict phage structural proteins (specifically tail proteins)?
Any fellow #phage researchers having trouble running PhANNs through the web tool? I'm able to upload and submit the fasta file, but the predictions never finish running...
January 10, 2025 at 11:31 AM
Reposted by Emma Sheriff, PhD
Ever want to see what the inside of a refrigerated centrifuge looks like? Now you know! 🦠🧫🧪🧬
January 8, 2025 at 11:40 PM
Any fellow #phage researchers having trouble running PhANNs through the web tool? I'm able to upload and submit the fasta file, but the predictions never finish running...
January 9, 2025 at 10:13 AM
Congrats to Lucy Chou-Zheng from the Hatoum-Aslan lab (my former research home) for her recent publication in Nucleic Acids Research! I worked on this project during my undergraduate research, and it's so exciting to see it finally out -- check it out here: academic.oup.com/nar/advance-...
academic.oup.com
December 2, 2024 at 11:23 AM